| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | GPT | SPY | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 · ytd | +1.7% | +5.6% | −5.0% | +8.7% | +0.3% | +1.6% | −2.1% | — | — | — | — | — | +10.7% | +7.5% | +3.2pp |
| 2025 | — | — | — | — | — | — | — | — | +8.4% | +3.7% | −0.1% | −2.9% | +8.9% | +17.7% | −8.8pp |
| 2018 · part | −5.3% | −14.2% | +0.4% | +8.1% | +17.3% | −0.9% | +0.3% | −0.1% | +0.3% | +0.1% | — | — | +3.1% | −4.6% | +7.6pp |
| 2017 | +186.9% | +6.2% | −5.9% | +5.7% | +6.3% | +0.5% | +1.7% | +0.8% | −0.7% | −1.8% | −4.0% | −6.5% | +190.4% | +21.7% | +168.7pp |
A month’s return is its month-end close over the prior month-end’s, so a year’s figure is exactly the product of its twelve monthly cells — no separate annualisation, no resampling. A blank cell means no return exists for that month (the series had not started, or it is the very first month-end, which has nothing to be measured against). Blank is never zero.
Basis. GPT is on the price only (split-adjusted close; dividends NOT included) basis, SPY on the total return (splits + dividends) basis. THE TWO DIFFER: one series includes dividends and the other does not, so the Δ column flatters whichever one is on the total-return basis. Read it with that in mind — the bases are printed rather than silently reconciled.
Partial years. A year marked “ytd” or “part” does not cover the full calendar year: either the stored history starts inside it (the figure is measured from the first month-end present) or the data stops before December (the figure runs through the last stored close). The row’s own tooltip names the exact boundary. It is never dressed up as a calendar-year return.
End of day. These are stored end-of-day closes, and the window is anchored on the LAST stored bar rather than today’s date — so the newest row ends where the data ends. Nothing here is intraday.
